Conveyors: power-driven – Conveyor system for moving a specific load as a separate unit – System includes a rotating or endless carrier with a load...
Patent
1980-07-18
1982-11-02
Reeves, Robert B.
Conveyors: power-driven
Conveyor system for moving a specific load as a separate unit
System includes a rotating or endless carrier with a load...
198580, B65G 3700
Patent
active
043569099
ABSTRACT:
A fraction collector includes a rack-holding tray mounted on a base which houses a drive mechanism for actuating rack shifters, the tray carrying twelve three-test-tube racks or twenty five-test-tube racks in two staggered rows. A rack adapted for carrying n test tubes is provided on a bottom side with n projections spaced along the length of the rack by a distance equal to the quotient of the rack length divided by n, the projections coacting with shifters in the form of vertically extending fingers reciprocatably mounted at opposite ends of the base for pushing racks in n incremental steps from one row to another. Each rack further includes a pair of additional projections for cooperating with two row shifters to push a row by one rack width upon the transfer of a rack to this row from the other row; these additional projections are spaced by pre-established distances from the long sides of the racks to facilitate the movement of a rack row by exactly one rack width. A sensor in the form of a photocell is provided on the frame or base for detecting the passage of a marker indicating the end of a rack series, the photocell being connected to a control logic network in turn operatively connected to a linkage drive for actuating and disengaging the same to operate the rack shifters and the row shifters in alternation.
REFERENCES:
patent: 3151639 (1964-10-01), Allington
patent: 3168124 (1965-02-01), Lenkey
patent: 3186556 (1965-06-01), Forsstrom
patent: 3202188 (1965-08-01), Allington
patent: 3233640 (1966-02-01), Van Der Graaf
patent: 3418084 (1968-12-01), Allington
patent: 4147250 (1979-04-01), Schulz
Adler Robert
November Dan
Buchler Instruments, Inc.
Reeves Robert B.
Ross Karl F.
Sobel Paul A.
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